Improvement in wrenches for inserting bung-bushes



' 'PLP BU Wrench for Ins ertin Hug-Bush.

I No. 214,755. Patented'April 29,1879.

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UNITED STATES PATENT OFFICE.

FRANKLIN P. BUMP, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN WRENCHES FOR |NSERT|N G BUNG-BUSHES.

Specification forming part of Letters Patent No. 214,755, dated April29, 1879; application filed December 13, 1878.

To all whom it may concern:

Be it known that I, FRANKLIN P. BUMP, of Chicago, Cook county, State ofIllinois, have invented a new and useful Improvement in Wrenches forInsertingBung-Bushes, of which the following is a full description,reference being had to the accompanying drawings, in which- Figure 1 isan elevation. Fig. 2 is a top view. Fig. 3 is a view of the bottom. Fig.4c is a section at line a: of Fig. 1. Fig. 5 is another elevation, theparts shown in Fig. 1 being turned partly around, and a lever beinginserted. v l My improvement relates to that class of wrenches which hasa supporting-core, which is placed within the bush while it is beinginserted.

It is customary to provide such wrenches with a head to receive a lever.Heretofore such head has always been made entire or solid, andfrequently leaves have been connected with such head loosely, whichleaves or sections have been adapted to be somewhat spread apart in use,so as to completely fill and press against the interior of the bush.

The object of my invention is to make a cheaper and better wrench thanthose now in use, and it consists in making the head and the b0 y of thecore in two parts, each half of the head and body of the core togetherforming a single piece, the two halves being connected together, ashereinafter described, and each half of the head having arecess on theinside, the two recesses forming a hole to receive a lever, all ashereinafter more fully set forth and claimed.

In the drawings, A A represent two pieces of metal, of the form shown.The lower parts, a. to, together form a core, which is to be inserted inthe bush, and the two upper parts, b b, form a head to receive a lever.The parts a a are corrugated vertically, or grooved, so as to hold uponthe interior of the bush when expanded. The inside of each of theseparts is plain. Itis not necessary that the entire outer surface ofthese parts should be grooved. The two parts I) b are each recessed onthe inside, so as to form a hole, 0, for a lever. As shown, theserecesses are gradually enlarged from the center outward.

dis a metal bar, one end of which is connected to one part of the head,and on the top thereof, by a screw. In the other end of d is a slot, 0;and f is a pin or stud, permanently secured to the other part of thehead, which stud extends into the slot 0. g is another bar, similar tod. It is connected to a by a screw, and in its other end is a slot, intowhich a stud upon a extends. These two bars at g hold the two parts A Atogether somewhat loosely, while Ais free to turn somewhat, either tothe right or left, and the slots in d and g allow it to have a littlelateral movement.

In use, the two parts A A, which together form a core, are to beinserted into the bush which is to be screwed into the barrel; then, bymeans of the lever, the bush can be turned to its place, the two parts AA. being spread a little apart upon both sides by the powerapplied tothe lever, when the wrench and the bush will rotate together.

The wrench can be used for removing as well as inserting bushes.

The object of making the hole 0 of the form shown and described is toget a shorter leverage and quicker action. This hole might be straight;but I prefer the form shown.

The parts a a are made tapering, to correspond with interior of thebushes with which it is to be used.

The action of the lever spreads the two parts A A squarely apart, andthe pressure on the interior of the bush is very nearly, if not quite,uniform at all points, so that there is no danger of bending orspringing the bush while inserting it.

What I claim as new, and desire to secure by Letters Patent, is asfollows:

The duplicate halves or sections A A, connected together at the top andbottom, and forming both the head and core of a wrench for insertingbung-bushes, such sections being provided with correspondingly-shapedrecesses, together forming an opening contracted at its center, adaptedto receive an operatinglever, substantially as and for the purposesspecified. I

' FRANKLIN P. BUMP- Witnesses: r

0. W. BOND,

H. F. BRUNS.

